SloRice
15+ Year Contributor
- 48
- 0
- Apr 21, 2005
-
Cincinnati,
Ohio
Hi guys,
Ive been a lurker for a little while, but this is my first post. Im not a DSM owner .I have a STI, so dont flame on me to much
Anyways, heres the meat .my buddy has a 98 Eclipse GS-T.
He has the following mods:
BR440 Turbo Kit running at 23psi
Greddy?? FMIC
680cc Injectors/Walbro 255
3 O2 housing/3 exhaust no kitties
Ported Stock Exhaust Manifold
Crushed 1G BOV
Ghettod Injen Intake to fit on 4 turbo inlet :
:
TXS Boost Controller
SAFC-II
Hes getting the pocket logger in a day or two
Here are my questions as I know more about tuning than he does. What is roughly the optimum AFR for this motor? What is the optimum timing this motor likes to work around so that I can adjust my AFRs accordingly.
I work for Mustang Dyno, so I have unlimited access to dyno time and a wideband. Yesterday at 20psi, the most I could squeeze out of his car was ~291WHP. This turbo should be good for ~350WHP, so what am I missing. Granted I dont have the pocket logger yet to see what his timing is doing and Im sure that it will help out quite a bit.
But if you could let me know what the afr and timing should be, that would be awesome. His car on 20psi seemed to be pretty happy running ~11.5:1 in the mid-range and then tapered off to 11:1 up top. But it was still popping and jerky.
Thanks,
Tim
Ive been a lurker for a little while, but this is my first post. Im not a DSM owner .I have a STI, so dont flame on me to much
Anyways, heres the meat .my buddy has a 98 Eclipse GS-T.
He has the following mods:
BR440 Turbo Kit running at 23psi
Greddy?? FMIC
680cc Injectors/Walbro 255
3 O2 housing/3 exhaust no kitties
Ported Stock Exhaust Manifold
Crushed 1G BOV
Ghettod Injen Intake to fit on 4 turbo inlet :
:TXS Boost Controller
SAFC-II
Hes getting the pocket logger in a day or two
Here are my questions as I know more about tuning than he does. What is roughly the optimum AFR for this motor? What is the optimum timing this motor likes to work around so that I can adjust my AFRs accordingly.
I work for Mustang Dyno, so I have unlimited access to dyno time and a wideband. Yesterday at 20psi, the most I could squeeze out of his car was ~291WHP. This turbo should be good for ~350WHP, so what am I missing. Granted I dont have the pocket logger yet to see what his timing is doing and Im sure that it will help out quite a bit.
But if you could let me know what the afr and timing should be, that would be awesome. His car on 20psi seemed to be pretty happy running ~11.5:1 in the mid-range and then tapered off to 11:1 up top. But it was still popping and jerky.
Thanks,
Tim
